Economics of supplemental irrigation on Polk County farms
By: H.W. Caldwell and E.N. Castle.
Contributors: Castle, Emery N.; Oregon State College. Agricultural Experiment Station.
Series: Miscellaneous paper -- 39.; Miscellaneous paper (Oregon State College. Agricultural Experiment Station) -- 39.
Publisher: Agricultural Experiment Station, Oregon State College
Published: 1957
Place of publication: Corvallis, Or
Language: eng
Number of pages: 18
Subjects: Irrigation -- Economic aspects -- Oregon -- Polk County.
Notes: Cover title.

"April 1957."

Also issued online.